Any option for mysqldump to ignore databases for backup?

We have 40 databases in our server.

We want to take 36 databases backup using mysqldump. How can i ignore remaining 4 databases in mysqldump command? Is there any option for mysqldump to ignore databases for backup in MySQL?

I know the general mysqldump command but it is very lengthy. I want to ignore only 4 databases and need to take remaining dbs backup.

Use grep to exclude databases you don't want:

candidates=$(echo "show databases" | mysql | grep -Ev "^(Database|mysql|performance_schema|information_schema)$")
mysqldump --databases $candidates

From looking at https://stackoverflow.com/questions/19354870/bash-command-line-and-input-limit it seems like you'll be able to handle long lines. Otherwise you can always

candidates=$(echo "show databases" | mysql | grep -Ev "^(Database|mysql|performance_schema|information_schema)$")
for candidate in $candidates[*]; do
    mysqldump $candidate 
done

StackExchange Database Administrators Q#35081, answer score: 21